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Sweden-Number/programs/rundll32/rundll32.c

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9.2 KiB
C
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/*
* PURPOSE: Load a DLL and run an entry point with the specified parameters
*
* Copyright 2002 Alberto Massari
* Copyright 2001-2003 Aric Stewart for CodeWeavers
* Copyright 2003 Mike McCormack for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/*
*
* rundll32 dllname,entrypoint [arguments]
*
* Documentation for this utility found on KB Q164787
*
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
/* Exclude rarely-used stuff from Windows headers */
#define WIN32_LEAN_AND_MEAN
#include "windows.h"
#include "wine/winbase16.h"
#include "wine/unicode.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(rundll32);
extern void WINAPI RunDLL_CallEntry16( FARPROC proc, HWND hwnd, HINSTANCE inst,
LPCSTR cmdline, INT cmdshow );
/*
* Control_RunDLL has these parameters
*/
typedef void (WINAPI *EntryPointW)(HWND hWnd, HINSTANCE hInst, LPWSTR lpszCmdLine, int nCmdShow);
typedef void (WINAPI *EntryPointA)(HWND hWnd, HINSTANCE hInst, LPSTR lpszCmdLine, int nCmdShow);
/*
* Control_RunDLL needs to have a window. So lets make us a very
* simple window class.
*/
static TCHAR *szTitle = "rundll32";
static TCHAR *szWindowClass = "class_rundll32";
static ATOM MyRegisterClass(HINSTANCE hInstance)
{
WNDCLASSEX wcex;
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = (WNDPROC)DefWindowProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInstance;
wcex.hIcon = NULL;
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wcex.lpszMenuName = NULL;
wcex.lpszClassName = szWindowClass;
wcex.hIconSm = NULL;
return RegisterClassEx(&wcex);
}
static HINSTANCE16 load_dll16( LPCWSTR dll )
{
HINSTANCE16 ret;
DWORD len = WideCharToMultiByte( CP_ACP, 0, dll, -1, NULL, 0, NULL, NULL );
char *dllA = HeapAlloc( GetProcessHeap(), 0, len );
WideCharToMultiByte( CP_ACP, 0, dll, -1, dllA, len, NULL, NULL );
ret = LoadLibrary16( dllA );
HeapFree( GetProcessHeap(), 0, dllA );
return ret;
}
static FARPROC16 get_entry_point16( HINSTANCE16 inst, LPCWSTR entry )
{
FARPROC16 ret;
DWORD len = WideCharToMultiByte( CP_ACP, 0, entry, -1, NULL, 0, NULL, NULL );
char *entryA = HeapAlloc( GetProcessHeap(), 0, len );
WideCharToMultiByte( CP_ACP, 0, entry, -1, entryA, len, NULL, NULL );
ret = GetProcAddress16( inst, entryA );
HeapFree( GetProcessHeap(), 0, entryA );
return ret;
}
static void *get_entry_point32( HMODULE module, LPCWSTR entry, BOOL *unicode )
{
void *ret;
DWORD len = WideCharToMultiByte( CP_ACP, 0, entry, -1, NULL, 0, NULL, NULL );
char *entryA = HeapAlloc( GetProcessHeap(), 0, len + 1 );
WideCharToMultiByte( CP_ACP, 0, entry, -1, entryA, len, NULL, NULL );
/* first try the W version */
*unicode = TRUE;
strcat( entryA, "W" );
if (!(ret = GetProcAddress( module, entryA )))
{
/* now the A version */
*unicode = FALSE;
entryA[strlen(entryA)-1] = 'A';
if (!(ret = GetProcAddress( module, entryA )))
{
/* now the version without suffix */
entryA[strlen(entryA)-1] = 0;
ret = GetProcAddress( module, entryA );
}
}
HeapFree( GetProcessHeap(), 0, entryA );
return ret;
}
static LPWSTR GetNextArg(LPWSTR *cmdline)
{
LPWSTR s;
LPWSTR arg,d;
int in_quotes,bcount,len=0;
/* count the chars */
bcount=0;
in_quotes=0;
s=*cmdline;
while (1) {
if (*s==0 || ((*s=='\t' || *s==' ') && !in_quotes)) {
/* end of this command line argument */
break;
} else if (*s=='\\') {
/* '\', count them */
bcount++;
} else if ((*s=='"') && ((bcount & 1)==0)) {
/* unescaped '"' */
in_quotes=!in_quotes;
bcount=0;
} else {
/* a regular character */
bcount=0;
}
s++;
len++;
}
arg=HeapAlloc(GetProcessHeap(), 0, (len+1)*sizeof(WCHAR));
if (!arg)
return NULL;
bcount=0;
in_quotes=0;
d=arg;
s=*cmdline;
while (*s) {
if ((*s=='\t' || *s==' ') && !in_quotes) {
/* end of this command line argument */
break;
} else if (*s=='\\') {
/* '\\' */
*d++=*s++;
bcount++;
} else if (*s=='"') {
/* '"' */
if ((bcount & 1)==0) {
/* Preceeded by an even number of '\', this is half that
* number of '\', plus a quote which we erase.
*/
d-=bcount/2;
in_quotes=!in_quotes;
s++;
} else {
/* Preceeded by an odd number of '\', this is half that
* number of '\' followed by a '"'
*/
d=d-bcount/2-1;
*d++='"';
s++;
}
bcount=0;
} else {
/* a regular character */
*d++=*s++;
bcount=0;
}
}
*d=0;
*cmdline=s;
/* skip the remaining spaces */
while (**cmdline=='\t' || **cmdline==' ') {
(*cmdline)++;
}
return arg;
}
int main(int argc, char* argv[])
{
HWND hWnd;
LPWSTR szCmdLine;
LPWSTR szDllName,szEntryPoint;
void *entry_point;
BOOL unicode, win16;
STARTUPINFOW info;
HMODULE hDll, instance;
hWnd=NULL;
hDll=NULL;
szDllName=NULL;
/* Initialize the rundll32 class */
MyRegisterClass( NULL );
hWnd = CreateWindow(szWindowClass, szTitle,
WS_OVERLAPPEDWINDOW|WS_VISIBLE,
CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, NULL, NULL);
/* Skip the rundll32.exe path */
szCmdLine=GetCommandLineW();
WINE_TRACE("CmdLine=%s\n",wine_dbgstr_w(szCmdLine));
szDllName=GetNextArg(&szCmdLine);
if (!szDllName || *szDllName==0)
goto CLEANUP;
HeapFree(GetProcessHeap(),0,szDllName);
/* Get the dll name and API EntryPoint */
szDllName=GetNextArg(&szCmdLine);
if (!szDllName || *szDllName==0)
goto CLEANUP;
WINE_TRACE("DllName=%s\n",wine_dbgstr_w(szDllName));
if (!(szEntryPoint = strchrW( szDllName, ',' ))) goto CLEANUP;
*szEntryPoint++=0;
WINE_TRACE("EntryPoint=%s\n",wine_dbgstr_w(szEntryPoint));
/* Load the library */
hDll=LoadLibraryW(szDllName);
if (hDll)
{
win16 = FALSE;
entry_point = get_entry_point32( hDll, szEntryPoint, &unicode );
}
else
{
HINSTANCE16 dll = load_dll16( szDllName );
if (dll <= 32)
{
/* Windows has a MessageBox here... */
WINE_ERR("Unable to load %s\n",wine_dbgstr_w(szDllName));
goto CLEANUP;
}
win16 = TRUE;
unicode = FALSE;
entry_point = get_entry_point16( dll, szEntryPoint );
}
if (!entry_point)
{
/* Windows has a MessageBox here... */
WINE_ERR( "Unable to find the entry point %s in %s\n",
wine_dbgstr_w(szEntryPoint), wine_dbgstr_w(szDllName) );
goto CLEANUP;
}
GetStartupInfoW( &info );
if (!(info.dwFlags & STARTF_USESHOWWINDOW)) info.wShowWindow = SW_SHOWDEFAULT;
instance = GetModuleHandleW(NULL); /* Windows always uses that, not hDll */
if (unicode)
{
EntryPointW pEntryPointW = entry_point;
WINE_TRACE( "Calling %s (%p,%p,%s,%d)\n", wine_dbgstr_w(szEntryPoint),
hWnd, instance, wine_dbgstr_w(szCmdLine), info.wShowWindow );
pEntryPointW( hWnd, instance, szCmdLine, info.wShowWindow );
}
else
{
DWORD len = WideCharToMultiByte( CP_ACP, 0, szCmdLine, -1, NULL, 0, NULL, NULL );
char *cmdline = HeapAlloc( GetProcessHeap(), 0, len );
WideCharToMultiByte( CP_ACP, 0, szCmdLine, -1, cmdline, len, NULL, NULL );
WINE_TRACE( "Calling %s (%p,%p,%s,%d)\n", wine_dbgstr_w(szEntryPoint),
hWnd, instance, wine_dbgstr_a(cmdline), info.wShowWindow );
if (win16) RunDLL_CallEntry16( entry_point, hWnd, instance, cmdline, info.wShowWindow );
else
{
EntryPointA pEntryPointA = entry_point;
pEntryPointA( hWnd, instance, cmdline, info.wShowWindow );
}
HeapFree( GetProcessHeap(), 0, cmdline );
}
CLEANUP:
if (hWnd)
DestroyWindow(hWnd);
if (hDll)
FreeLibrary(hDll);
if (szDllName)
HeapFree(GetProcessHeap(),0,szDllName);
return 0; /* rundll32 always returns 0! */
}
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